CHICAGO -- Texas center Dexter Pittman returned home after learning Thursday night that his 16-year-old brother had been shot and killed, according to several published reports.

The NBA announced that he had left due to a family emergency. ESPN.com's Andy Katz said Pittman's 15-year-old brother Darius Johnson was shot in the head and killed during a dispute Thursday night in his garage.

In other pre-draft camp news:

Greivis Vasquez (G, Maryland) returned to Maryland for his college graduation and did not participate in the workout Friday.

Jerome Jordan (C, Tulsa) suffered a pulled quad Thursday and will not participate in workouts today.